CVE-2018-0739

MEDIUM

Description

Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).

References

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

http://www.securityfocus.com/bid/103518

http://www.securityfocus.com/bid/105609

http://www.securitytracker.com/id/1040576

https://access.redhat.com/errata/RHSA-2018:3090

https://access.redhat.com/errata/RHSA-2018:3221

https://access.redhat.com/errata/RHSA-2018:3505

https://access.redhat.com/errata/RHSA-2019:0366

https://access.redhat.com/errata/RHSA-2019:0367

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9310d45087ae546e27e61ddf8f6367f29848220d

https://lists.debian.org/debian-lts-announce/2018/03/msg00033.html

https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/

https://security.gentoo.org/glsa/201811-21

https://security.netapp.com/advisory/ntap-20180330-0002/

https://security.netapp.com/advisory/ntap-20180726-0002/

https://securityadvisories.paloaltonetworks.com/Home/Detail/133

https://usn.ubuntu.com/3611-1/

https://usn.ubuntu.com/3611-2/

https://www.debian.org/security/2018/dsa-4157

https://www.debian.org/security/2018/dsa-4158

https://www.openssl.org/news/secadv/20180327.txt

https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

https://www.tenable.com/security/tns-2018-04

https://www.tenable.com/security/tns-2018-06

https://www.tenable.com/security/tns-2018-07

Details

Source: MITRE

Published: 2018-03-27

Updated: 2019-02-19

Type: CWE-400

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM